Facts
- Chemical formula
- CaMn(Fe³⁺,Mn)₂Fe³⁺₂(PO₄)₄(OH)₃(H₂O)₇
- Crystal system
- Monoclinic
- Number of elements
- 6
- IMA status
- Approved
- Type locality
- Cornelia shaft, Hagendorf South open cut
- Named after
- Erich Keck
Sources: Wikidata (CC0), IMA list of minerals via Wikidata · Wikidata Q3814212